From Jonny Griffiths try RISPS (Rich Starting Points), Open-ended investigative activities for the A Level Pure Mathematics classroom. On the home page note the helpful index by topic, choose a personal favourite of mine, Risp 21 Advanced Arithmagons for example and you will see not only the task but also teachers notes.
Also from Jonny Griffiths his companion sites on Statistics and Carom-Maths -activities to bridge the gap between A Level and University. You can find a resource collection from Jonny Griffiths on TES Resources.
Making Statistics Vital has some tasks which could be excellent for the current A Level specification, look at the this task on World Wide Statistics for example which includes the task with answers and a spreadsheet with data for 191 countries.
